My school has provided us some emails with a custom domain (not @gmail.com but @myschool.smth) and we as students are only able to login via gmail, however i obviously do not want that. What can i do to prevent that? I tried logging into the email via Thunderbird but i get blocked because my administrator doesn’t allow that.
If their admin is blocking the use of external email clients I wouldn’t be surprised if they’re blocking forwarding to external email addresses to as that’s a very common action taken by attackers on compromised accounts.